NVIDIA GeForce 7800 GTX 512MB: Upping The Ante
Our Test System & 3DMark05
HOW WE CONFIGURED THE TEST SYSTEM: We used two different test systems for this article. We tested our NVIDIA based cards on an Asus A8N32-SLI, nForce 4 SLIX16 chipset based motherboard, powered by an AMD Athlon 64 FX-55 processor and 1GB of low-latency Corsair XMS RAM. However, the ATI based cards were tested on an ATI reference Radeon Xpress 200 motherboard, but with the same processor and RAM. The first thing we did when configuring these test systems was enter each BIOS and load the "High Performance Defaults." The hard drive was then formatted, and Windows XP Professional with SP2 was installed. When the installation was complete, we installed the latest chipset drivers available, installed all of the other necessary drivers for the rest of our components, and removed Windows Messenger from the system. Auto-Updating and System Restore were also disabled, the hard drive was defragmented, and a 768MB permanent page file was created on the same partition as the Windows installation. Lastly, we set Windows XP's Visual Effects to "best performance," installed all of the benchmarking software, and ran the tests.
 |
|
Motherboard - Video Cards - Memory - Audio - Hard Drive -
|
Hardware Used: AMD Athlon 64 FX-55 (2.6GHz) Asus A8N32-SLI nForce4 SLIX16 chipset ATI Reference CrossFire MB ATI Radeon Xpress 200 CF Edition GeForce 7800 GTX 512MB (x2) GeForce 7800 GTX (x2) Radeon X1800 XT 1024MB Corsair XMS PC3200 RAM CAS 2 Integrated on board Western Digital "Raptor" 36GB - 10,000RPM - SATA |
Operating System - Chipset Drivers - DirectX - Video Drivers - Synthetic (DX) - DirectX - DirectX - DirectX - DirectX - OpenGL - OpenGL - |
Relevant Software: Windows XP Professional SP2 (Patched) nForce Drivers v6.82 DirectX 9.0c NVIDIA Forceware v81.89 ATI Catalyst v5.11 Benchmarks Used: 3DMark05 v1.2.0 Splinter Cell: Chaos Theory v1.04 F.E.A.R. FarCry v1.33* Half Life 2* Doom 3 v1.3 (Single Player)* Quake 4* * - Custom Test (HH Exclusive demo) |
 |
|
;) 3DMark05 |
3DMark05 is the latest installment in a long line of synthetic 3D graphics benchmarks, dating back to late 1998. 3DMark05 is a synthetic benchmark that requires a DirectX 9.0 compliant video card, with support for Pixel Shaders 2.0 or higher, to render all of the various modules that comprise the suite. To generate its final "score", 3DMark05 runs three different simulated game tests and uses each test's framerate in the final tabulation. Fillrate, Memory bandwidth, and compute performance especially all have a measurable impact on performance in this benchmark. We ran 3DMark05's default test (1,024 x 768) on all of the cards and configurations we tested, and have the overall results posted for you below. |
There are a few important comparisons to make while perusing the new GeForce 7800 GTX 512MB's benchmark scores on the proceeding pages. First, looking at the new 512MB GeForce card's performance versus its 256MB cousin. And second, focus on the GeForce 7800 GTX 512MB's performance as is compares to a 512MB Radeon X1800 XT. Then at the ultra-high-end compare the two SLI systems to each other.
As you can see above, using 3DMark05's default benchmark parameters, the new GeForce 7800 GTX 512MB handily beats the 256MB GeForce 7800 GTX by almost 2000 points. The Radeon X1800 XT fares much better, trailing by only 473 points, but that's still enough of a margin to give NVIDIA's new flagship a clear advantage here. Standing alone, perched way at the top of the chart is the GeForce 7800 GTX 512MB SLI configuration, which bested a pair of 256MB cards by roughly 800 points.
